The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 2449
Hash: 389b7f77ccd67ba743bba73b6b278e476202f85dcea2184d2afbb2ea77a50c86
Previous block: 2a8e5e7e73d7cd3aa9d821758c30c00fcce2fc931aeced175355cdd514fc3a81
Next block: 0aa80edfccc90726b466f39f43464a44d9c3a844705a74b51ce308318b094824
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847295
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: a6c2d52dea4e4589eb526ed4f620783debb7bde8569213519c37c413b2c4d2c9
Median time: 1743847294
Difficulty: 4.656542373906925e-10
Confirmations: 194
Chainwork: 0000000000000000000000000000000000000000000000000000000000001324
Bits: 207fffff